Lying with a straight face...
One day, Mr and Mrs Tan asked their four children, Benedict, Bob, Brenda and Brian about whether they did their homework. They know that those who did are telling the truth while those who did not are lying.
-
Benedict: All four of us did our homework.
-
Bob : Three of us did our homework
-
Brenda : Two of us did our homework
-
Brian: One of us did our homework.
The one who is telling the truth is...
Benedict, Bob, Brenda or Brian?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
There can only be one person telling the truth as the number of siblings who did their homework is definite. Since only one of the statements is true, only ONE of the siblings did their homework and since this statement is made by Brian, B r i a n is the one telling the truth.